<html>
	<head>		
		<title>图片按序变换</title>
		<script src="../js/jquery-3.7.1.js"></script>
		<script src="../js/11-7.js"></script>
	</head>
	<body>		
		<input type="button" value="变换图片" id="b1">		
		<input type="button" value="重置" id="b2">					
		<div>
			<img id="img1" src="../img/a3.gif" width="100px" height="100px">			
		</div>		
	</body>
</html>
